Knockdown paper box.



I J. W. MOINDOE. KNOGKDOWN PAPER BOX. nruoflmn FILED snrm. so 1904-.

Patented Apr. 20, 1909.

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UNITED STATES PATENT OFFICE,

JAMES W. MCINDOE, OF BOSTON, MASSACHUSETTS, ASSIGNOR OF ONE-HALF TOARTHUR E. WHITNEY, OF WINCHESTER, MASSACHUSETTS.

KNOGKDOWN PAPER BOX.

Specification of Letters Patent.

Patented April 20, 1909.

Application filed September 30, 1904. Serial No. 226,652.

To all whom it may concern:

Be it known that I, JAMES W. MoINnoE, of Boston, in the county ofSuifolk and State of Massachusetts, have invented certain new and usefulImprovements in Knockdown Paper Boxes, of which the following, taken inconnection with the accompanying drawings, is a specification.

7 My invention relates to knock-down paper boxes and has for its objectthe production of a box of this character the end walls of which consistof two end portions locked together in a manner that will give greatrigidity to the box and at the same time present an ornamentalappearance by forming a depressed panel in the outer face of each end.

It consists in certain novel features of construction, arrangement, andcombination of parts which will be readily understood by reference tothe description of the accompanying drawing forming a part of thisapplication, and to the claims hereto appended, and in which theinvention isclearly pointed out.

l igure 1 of the drawings represents a plan of the blank, cut fromcardboard or other suitable material, from which a complete covered boxmay be formed. Fig. 2 represents a perspective View of a box embodyingthis invention, with the cover raised or partially opened, and Fig. 3represents a slight modification of the form of the blank in which thelocking tongue is formed by cutting two parallel slits in the end piece'1 and connecting two of the ends of said slits by means of a diagonalslit.

In the drawings, 1 indicates the bottom of the box, 2 the front side ofthe box, 3 the rear side, l4lthe inner end portions connected to thefront side portion 2, each of which has cut through it parallel to thebottom edge thereof a straight opening 5 extending longitudinally ineach direction an equal distance from the center of said end portion 1,the ends of said slot being the same distance from the front and rearends of said end portion. Each end portion 1 is also provided with aflap 6 which is bent on the dot-ted line 7 into a position at a rightangle to said end piece 4, which in turn is bent on the dotted line 8into a position at a right angle to the front 2. The front 2 is bent onthe dotted line 9 into a position at "a right angle to the bottom 1 withthe flap 6 resting 3 upon the inner or upper surface of said bottom asshown. The rear side wall 3 has attached thereto two outer end pieces10, each of which has cut through it an inverted U- shaped slit or slotthe horizontal. and vertical portions of which are equi-distant from thetop and side edges thereof, thus forming a tongue 11 which is adapted toengage the opening 5 in the inner end piece 4 and lock said end piecestogether.

The tongue 11 is equal in width to the length of the slot or opening 5and its edges are at the same distance from the top and ends of saidouter end piece or portion that said slot 5 is from the lower end of theinner end piece or portion 4. When using thick stock it is an advantageto have the openings through the end pieces 4: and 10 in the form ofslots of a width equal to the thickness of the material.

Each outer end piece 10 has on one edge.

thereof a flap 12 which is bent on the dotted line 13 into a position ata right angle to the end 10, and also has formed on its other edge aflap 14: as shown.

The outer end pieces 10 are bent on the dotted lines 15 into positionsat right angles to said back wall 3, which is in turn bent on the dottedline 16 into a position at a rightv angle to the bottom 1, and the flap12 is passed between said bottom 1 and the flap 6 of the inner endpiece, and the tongues 11 are passed through the slots or openings 5 tolock said inner and outer end pieces together, and then the flaps 14 areturned on the dotted lines 17 into positions parallel to the bottom 1 tocover a small section of each end of the box.

The end portions 4 and 10 are each of a length equal to the width of thebox and when locked together by the tongue 11 form an end wall of doublethickness, thereby securing great rigidity to the box which is increasedby the inner edge'of the portion 4; abutting against the inner wall ofthe back When the -portions 4L and 10 are thus locked together the edgesof the slot in the outer end portion 10 are left exposed, thus givingthe end a depressed panel appearance.

The back 3 has connected to its upper edge the cover 18 provided withthe flap 19 which is turned on the dotted line 20 into a position at aright angle to the cover 18 and then the cover is folded on the dottedline 21 into a position parallel to the bottom 1 so as to rest upon theupper surfaces of the flaps 1 with the flap 19 extending into the boxbetween the box front and the front ends of the flaps 14.

It is obvious that when the end portions and 10 are locked together bythe insertion of the tongue 11 in the slot 5 which is of the same lengthas the width of the tongue, all longitudinal movement of said endportions --l-1(l relative to each other is prevented.

The flaps 12 on the lower edges of the outer end pieces may be omitted,Without departing from the principle of the inrention, as shown in Fig.3.

It is obvious that. the locking tongue in the end portions 10 may beformed by cutting two parallel slits therein and connecting these slitsat one end by meant-1 of a diagonal slit, thus forming a tongue such asis shown at 11* in Fig. 3 of the drawing, one end of the tongue beingsomewhat longer than the other and thereby facilitatin the insertion ofthe tongue through the slit 5 of the end portions hat I claim as new anddesire to secure by Letters Patent of the Ilnited States, is

1. In a lniock-down box, a blank comprising a main body to fold onparallel lines to form the bottom, front and rear sides, the cover and aflap extending from said cover, inner rectanguhir end portions connectedto and projecting from the opposite ends of the front side and arrangedto be folded at right angles thereto, outer rectai'igular end portionsconnected to and projecting from the opposite ends of the rear sidearranged to be folded at right angles thereto and overlap the other endportions, flaps connected to the lower edges of said inner end portionsand foldable at right angles thereto, a pair of flaps connected to theupper edge of said outer end portions and foldable at right anglesthereto, and means forming part of said end portions for looking themtogether and preventing their longitudinal separation.

2. In a knoclodown box, a blank comprising a main body to fold onparallel lines to form the bottom, front and rear sides, the cover and aflap extending from said cover, inner rectangular end portions equal inlength to the end of the box to be made and connected to and projectingfrom the opposite ends of the front side and arranged to be folded atright angles thereto, so that the free edges thereof will abut the innerwall of the rear side of the box; outer rectangular end portions equalin length to the end of the box to be made and connected to andprojecting from the opposite ends of the rear side arranged to be foldedat right angles thereto and extends to the front side of the box, flapsconnected to the lower edges of said inner end portions foldable atright angles thereto, and extending from the front inner wall of the boxto the rear inner wall thereof; a pair of flaps connected to the upperedge of said outer end portions foldable at right angles thereto, overthe inner end portion and ex tending from the front inner will to therear inner wall of the box; and means for locking said end portionstogether to prevent movement longitudinally of each other.

3. In a knockdown box, a blank comprising a main body to fold onparallel lines to form the bottom, front and rear sides, the cover and aflap extending roni said cover, inner rectangular end po ions connectedto and projecting from the opposite ones of the front side and arrangedto be folded at right angles thereto, outer rectangular end portionsconnected to and projecting from he opposite ends of the rear sidearranged to be folded at right angles thereto and overlap the other endportions, flaps connected to the lower edges of said inner end portionsand foldable at right angles thereto, a pair of flaps connected to theupper edge of said outer end portions and a pair of flaps connected tothe lower edge thereof all of said flaps being foldable at right anglesthereto, and means forming part of said end portions for locking themtogether to prevent movement longitudinally of each other.

4:. In a knock-down box, a blank compris ing a main body to fold onparallel lines to form the bottom, front and rear sides,'the cover andcover flaps, inner end portions connected to and projecting from theopposite ends of the front side and arranged to be folded at rightangles thereto, outer end portions connected to and projecting from theopposite e ds of the rear side arranged to be folded at right anglesthereto, flaps connected to the lower edges of said inner end portionsand foldable at right angles thereto, a pair of flaps connected to theupper edge of said outer end portions and fold-able at rightanglesthereto, each of one pair of said end portions having outtherethrough a slit arranged parallel to the upper edge thereof. and alocking tongue formed in er on of the other pair of end portions bycutting a slit parallel to the upper edge thereof and two other slitsextending from the ends of and at right angles to the firstnanied slitand with their terminal ends at equal distance from the two edges ofsaid end portion.

A knock-down box formed of a single piece of material cut and scored toform the bottom, front and rear sides, cover, two pairs of end pieceshaving areas equal to the sizeof the end of the box, inwardly foldedflaps on the lower edges of one pair of said end pieces, inwardlyfolding flaps on the upper edges of the other pair of end pieces, a pairof locking tongues, and a pair of locking openings formed in said endpieces parallel to the top edges thereof and so arranged relative toeach other that the inner and outer end pieces may thereby be lockedtogether and present the appearance of a rectangular panel in the outersurface of the box end.

6. A knock-down box formed of a single piece of material cut and scoredto form the bottom, front and rear sides, cover, two pairs of end pieceshaving areas equal to the size of the end of the box, inwardly foldedflaps on the lower edges of one pair of said end pieces, inwardlyfolding flaps on the upper and lower edges of the other pair of endpieces, a pair of locking tongues, and a pair of locking openings formedin said end pieces parallel to the top edges thereof and so arrangedrelatively to each other that the inner and outer end pieces may therebybe locked together and present the appearance of a rectangular panel inthe outer surface of the box end.

7. A knock-down box formed of a single piece of material by folding saidmaterial on parallel lines to form a bottom, front and .rear sides, acover and a flap extending from said cover, and on other lines at rightangles to said parallel lines to form inner and outer rectangular endpieces each having an area equal to the size of the end of the box,inwardly folded flaps on the lower edges of each of said end pieces,inwardly folded flaps on the upper edges of said outer end pieces, andmeans forming part of said end pieces for locking them together to prevent movement longitudinally of, each other.

In testimony whereof, I have signed my name to this specification in thepresence of two subscribing Witnesses, on this twentyeighth day ofSeptember A. D. 1904.

JAMES W. MOrNDoE.

Witnesses N. C. LOMBARD, NM. E. HINGsToN.

